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Improving Strength,...
Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People.
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- Andersson, Eva A (författare)
- Gymnastik- och idrottshögskolan,Åstrandlaboratoriet,Karolinska institutet
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- Frank, Per (författare)
- Gymnastik- och idrottshögskolan,Åstrandlaboratoriet,Karolinska institutet
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- Pontén, Marjan (författare)
- Gymnastik- och idrottshögskolan,Åstrandlaboratoriet
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- Ekblom, Björn (författare)
- Gymnastik- och idrottshögskolan,Björn Ekbloms forskningsgrupp
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- Ekblom, Maria (författare)
- Karolinska Institutet,Gymnastik- och idrottshögskolan,Åstrandlaboratoriet,Karolinska institutet
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- Moberg, Marcus (författare)
- Gymnastik- och idrottshögskolan,Åstrandlaboratoriet
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- Sahlin, Kent (författare)
- Gymnastik- och idrottshögskolan,Åstrandlaboratoriet
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(creator_code:org_t)
- 2017-07-05
- 2017
- Engelska.
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Ingår i: Journal of Visualized Experiments. - : MyJove Corporation. - 1940-087X. ; :125
- Relaterad länk:
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https://europepmc.or...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- This protocol describes the simultaneous use of a broad span of methods to examine muscle aerobic capacity, glucose tolerance, strength, and power in elderly people performing short-term resistance training (RET). Supervised progressive resistance training for 1 h three times a week over 8 weeks was performed by RET participants (71±1 years, range 65-80). Compared to a control group without training, the RET showed improvements on the measures used to indicate strength, power, glucose tolerance, and several parameters of muscle aerobic capacity. Strength training was performed in a gym with only robust fitness equipment. An isokinetic dynamometer for knee extensor strength permitted the measurement of concentric, eccentric, and static strength, which increased for the RET group (8-12% post- versus pre-test). The power (rate of force development, RFD) at the initial 0-30 ms also showed an increase for the RET group (52%). A glucose tolerance test with frequent blood glucose measurements showed improvements only for the RET group in terms of blood glucose values after 2 h (14%) and the area under the curve (21%). The blood lipid profile also improved (8%). From muscle biopsy samples prepared using histochemistry, the amount of fiber type IIa increased, and a trend towards a decrease in IIx in the RET group reflected a change to a more oxidative profile in terms of fiber composition. Western blot (to determine the protein content related to the signaling for muscle protein synthesis) showed a rise of 69% in both Akt and mTOR in the RET group; this also showed an increase in mitochondrial proteins for OXPHOS complex II and citrate synthase (both ~30%) and for complex IV (90%), in only the RET group. We demonstrate that this type of progressive resistance training offers various improvements (e.g., strength, power, aerobic capacity, glucose tolerance, and plasma lipid profile).
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Nyckelord
- Medicin/Teknik
- Medicine/Technology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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